<template>
  <div>
    <!-- 面包屑导航 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{path:'/'}">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图区域 -->
    <el-card>
      <!-- 搜索与添加 -->
      <el-row :gutter="20">
        <!-- gutter 是列与列的间隙 -->
        <el-col :span="8">
          <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getUserList">
            <el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="addDialogVisible = true">添加用户</el-button>
        </el-col>
      </el-row>

      <!-- 渲染表格 -->
      <el-table :data="userList" border stripe>
        <el-table-column type="index"></el-table-column>
        <el-table-column label="姓名" prop="username"></el-table-column>
        <el-table-column label="邮箱" prop="email"></el-table-column>
        <el-table-column label="电话" prop="mobile"></el-table-column>
        <el-table-column label="角色" prop="role_name"></el-table-column>
        <el-table-column label="状态">
          <template v-slot="scope">
            <el-switch v-model="scope.row.mg_state" @change="userStateChanged(scope.row)"></el-switch>
          </template>
        </el-table-column>
        <el-table-column label="操作" width="180px" v-slot="scope">
          <template >
            <el-tooltip effect="dark" content="修改用户" placement="top" :enterable="false">
              <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.id)"></el-button>
            </el-tooltip>
            <el-tooltip effect="dark" content="删除用户" placement="top" :enterable="false">
              <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeUserById(scope.row.id, scope.row.username)"></el-button>
            </el-tooltip>
            <el-tooltip effect="dark" content="分配角色" placement="top" :enterable="false" >
              <el-button type="warning" icon="el-icon-setting" size="mini" @click="showSetRoleDialog(scope.row)"></el-button>
            </el-tooltip>
          </template>
        </el-table-column>
      </el-table>

      <!-- 分页区域 -->
      <el-pagination @size-change="handleSizeChange" @current-change="handleCurrentChange" :current-page="queryInfo.pagenum" :page-sizes="[1, 2, 5, 10]" :page-size="queryInfo.pagesize" layout="total, sizes, prev, pager, next, jumper" :total="total"></el-pagination>
    </el-card>

    <!-- 添加用户的对话框 -->
    <el-dialog title="添加用户" :visible.sync="addDialogVisible" width="50%" @close="addDialogClosed">
      <!-- 内容主体区域 -->
      <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px">
        <el-form-item label="用户名" prop="username">
          <el-input v-model="addForm.username"></el-input>
        </el-form-item>
        <el-form-item label="密码" prop="password">
          <el-input v-model="addForm.password"></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="addForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机" prop="mobile">
          <el-input v-model="addForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <!-- 底部区域 -->
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取消</el-button>
        <el-button type="primary" @click="editUser">确定</el-button>
      </span>
    </el-dialog>

    <!-- 编辑用户的对话框 -->
    <el-dialog title="编辑用户" :visible.sync="editDialogVisible" width="50%" @close="editDialogClosed">
      <!-- 内容主体区域 -->
      <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="70px">
        <el-form-item label="用户名">
          <el-input v-model="editForm.username" disabled></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="editForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机" prop="mobile">
          <el-input v-model="editForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <!-- 底部区域 -->
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取消</el-button>
        <el-button type="primary" @click="editUser">确定</el-button>
      </span>
    </el-dialog>

    <!-- 分配用户权限的对话框 -->
    <el-dialog title="分配权限" :visible.sync="setRoleDialogVisible" width="50%" @close="setRoleDialogClosed">
      <div>
        <p>当前用户： {{userInfo.username}}</p>
        <p>
          角色：{{userInfo.role_name}}
          <el-select v-model="selectedRoleId" placeholder="请选择角色">
            <el-option v-for="item in rolesList" :key="item.id" :label="item.roleName" :value="item.id"></el-option>
          </el-select>
        </p>
      </div>
      <span slot="footer" class="dialog-footer">
        <el-button @click="setRoleDialogVisible = false">取消</el-button>
        <el-button type="primary" @click="setUserRole">确定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  name: 'users',
  data () {
    // 验证邮箱的规则
    const checkEmail = (rule, value, cb) => {
      // 验证邮箱的正则表达式
      const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9])+/
      if (regEmail.test(value)) {
        // 合法的邮箱
        return cb()
      }

      cb(new Error('请输入合法的邮箱'))
    }
    // 验证手机号码的规则
    const checkMobile = (rule, value, cb) => {
      // 验证邮箱的正则表达式
      const regMobile = /^(0|86|17951)?(13[0-9]|15[0123456789]|17[678]|18[0-9]|14[57])[0-9]{8}$/
      if (regMobile.test(value)) {
        // 合法的邮箱
        return cb()
      }

      cb(new Error('请输入合法的手机号码'))
    }

    return {
      // 获取用户列表参数对象
      queryInfo: {
        query: '',
        // 当前页数
        pagenum: 1,
        // 当前显示多少条数据
        pagesize: 2
      },
      userList: [],
      total: 0,
      // 控制显示对话框的
      addDialogVisible: false,
      //
      addForm: {
        username: '',
        password: '',
        email: '',
        mobile: ''
      },
      // 添加用户的表单验证规则
      addFormRules: {
        username: [
          {
            required: true,
            message: '请输入用户名',
            trigger: 'blur'
          },
          {
            min: 3,
            max: 10,
            message: '用户名的长度在 3~10 个字符之间',
            trigger: 'blur'
          }
        ],
        password: [
          {
            required: true,
            message: '请输入密码',
            trigger: 'blur'
          },
          {
            min: 6,
            max: 15,
            message: '用户名的长度在 6~15 个字符之间',
            trigger: 'blur'
          }
        ],
        email: [
          {
            required: true,
            message: '请输入邮箱',
            trigger: 'blur'
          },
          {
            validator: checkEmail,
            trigger: 'blur'
          }
        ],
        mobile: [
          {
            required: true,
            message: '请输入手机号码',
            trigger: 'blur'
          },
          {
            validator: checkMobile,
            trigger: 'blur'
          }
        ]
      },
      // 展示编辑用户的对话框
      editDialogVisible: false,
      // 编辑用户的表单
      editForm: {
        username: '',
        email: '',
        mobile: ''
      },
      // 编辑用户的规则
      editFormRules: {
        email: [
          {
            required: true,
            message: '请输入用户新邮箱',
            trigger: 'blur'
          },
          {
            validator: checkEmail,
            trigger: 'blur'
          }
        ],
        mobile: [
          {
            required: true,
            message: '请输入用户新手机号码',
            trigger: 'blur'
          },
          {
            validator: checkMobile,
            trigger: 'blur'
          }
        ]
      },
      // 控制分配角色的对话框显示与隐藏
      setRoleDialogVisible: false,
      // 需要分配角色的用户信息
      userInfo: {},
      // 所有角色的数据列表
      rolesList: [],
      // 已选中的角色Id值
      selectedRoleId: ''
    }
  },
  created () {
    this.getUserList()
  },
  methods: {
    async getUserList () {
      const { data: result } = await this.$http.get('users', { params: this.queryInfo })
      // console.log(result)

      if (result.meta.status !== 200) {
        return this.$message.error('获取用户列表失败')
      }
      this.userList = result.data.users
      this.total = result.data.total
    },
    // 监听 pagesize 改变的事件
    handleSizeChange (newSize) {
      // console.log(newSize)
      this.queryInfo.pagesize = newSize
      this.getUserList()
    },
    // 监听页码值改变的事件
    handleCurrentChange (newPage) {
      // console.log(newPage)
      this.queryInfo.pagenum = newPage
      this.getUserList()
    },
    // 监听 switch 快关状态的改变
    async userStateChanged (userInfo) {
      // console.log(userInfo)
      const { data: result } = await this.$http.put(`users/${userInfo.id}/state/${userInfo.mg_state}`)

      if (result.meta.status !== 200) {
        userInfo.mg_state = !userInfo.mg_state
        return this.$message.error('update user state failed!')
      }
      this.$message.success('update user state success!')
    },
    // 监听添加用户对话的关闭时间
    addDialogClosed () {
      this.$refs.addFormRef.resetFields()
    },
    // 点击按钮，添加新用户
    addUser () {
      this.$refs.addFormRef.validate(async valid => {
        if (!valid) return this.$message.error('validate failed!')
        // 可以发起添加用户的网络请求
        const { data: result } = await this.$http.post('users', this.addForm)

        if (result.meta.status !== 201) {
          this.$message.error('create user failed!')
        }

        this.$message.success('create user success!')
        // 隐藏添加用户对话框
        this.addDialogVisible = false
        // 重新获取用户列表数据
        this.getUserList()
      })
    },
    // 展示编辑对话框
    async showEditDialog (id) {
      // console.log(id)
      const { data: result } = await this.$http.get('users/' + id)

      if (result.meta.status !== 200) {
        return this.$message.error('search user failed!')
      }

      this.editForm = result.data
      this.editDialogVisible = true
    },
    // 编辑用户信息并提交
    editUser () {
      this.$refs.editFormRef.validate(async valid => {
        if (!valid) return this.$message.error('validate edit user info error!')
        // 发起修改用户信息的数据请求
        const { data: result } = await this.$http.put('users/' + this.editForm.id, { email: this.editForm.email, mobile: this.editForm.mobile })

        if (result.meta.status !== 200) {
          return this.$message.error('update user info failed!')
        }

        // 关闭对话框
        this.editDialogVisible = false
        // 刷新数据
        this.getUserList()
        // 提示修改成功
        this.$message.success('update user info success!')
      })
    },
    // 关闭编辑窗口
    editDialogClosed () {
      this.$refs.editFormRef.resetFields()
    },
    // 删除用户
    async removeUserById (id, username) {
      // 弹框询问
      const confirmResult = await this.$confirm('此操作将永久删除该用户，是否继续?', '提示', {
        confirmButtonText: 'ok',
        cancelButtonText: 'cancel'
      }).catch(err => err)
      //   .catch(err => {
      //   return err
      // })

      // 如果用户确认删除，则返回值为字符串confirm
      // 如果用户取消删除，则返回值为字符串cancel
      // console.log(confirmResult)
      if (confirmResult !== 'confirm') {
        return this.$message.info('already cancel remove this user: ' + username)
      }

      // 发起请求删除用户
      const { data: result } = await this.$http.delete('users/' + id)

      if (result.meta.status !== 200) {
        return this.$message.error('remove user failed!')
      }

      this.$message.success('remove user success!')
      this.getUserList()
    },
    // 展开分配权限的对话框
    async showSetRoleDialog (userInfo) {
      this.userInfo = userInfo
      // console.log(userInfo)

      // 在展示对话之前，获取所有角色的列表
      const { data: result } = await this.$http.get('roles')
      if (result.meta.status !== 200) {
        return this.$message.error('get role list failed!')
      }

      this.rolesList = result.data
      this.setRoleDialogVisible = true
    },
    // 设置用户角色
    async setUserRole () {
      if (!this.selectedRoleId) {
        this.$message.error('please select the new role for thisuser！')
      }

      const { data: result } = await this.$http.put(`users/${this.userInfo.id}/role`, { rid: this.selectedRoleId })

      if (result.meta.status !== 200) {
        return this.$message.error('update user role failed!')
      }

      this.$message.success('update user role success!')

      this.getUserList()

      this.setRoleDialogVisible = false
    },
    // 关闭分配权限对话框
    setRoleDialogClosed () {
      this.selectedRoleId = ''
      this.userInfo = {}
    }
  }
}
</script>

<style lang="less" scoped>

</style>
